Share

IDENTIFICATION AND REDUCTION OF ROTARY COMPRESSOR PURE TONE NOISE SOURCES USING RANDOM NOISE EXCITATION.

Author(s) : BUSH J. W., NEVILLE D. G.

Summary

SOURCES OF NOISE AT DISCRETE FREQUENCIES IN COMPRESSORS MAY BE GENERATED BY ACOUSTIC ENERGY IN THE DISCHARGE PULSE EXCITING MECHANICAL OR ACOUSTIC RESONANCES WITHIN THE COMPRESSOR ASSEMBLY. IN THIS CASE HISTORY, A KNOWN NOISE SOURCE WAS USED IN THE VICINITY OF THE DISCHARGE PORT TO EXCITE THOSE RESONANCES IN A BENCH-TYPE TEST WHERE THEY COULD BE EASILY IDENTIFIED. THIS TEST COULD BE RUN IN AIR AT A ROOM AMBIENT RATHER THAN AT THE TEMPERATURE AND REFRIGERANT ENVIRONMENT OF A FULL PROTOTYPE. MODELLING CLAY WAS USED TO EXPERIMENTALLY MODIFY ACOUSTIC CAVITIES SINCE ACTUAL COMPRESSOR OPERATIONWAS NOT REQUIRED. THIS ALLOWED RAPID EVALUATION OF SEVERAL DIFFERENT DESIGN PROPOSALS.

Details

  • Original title: IDENTIFICATION AND REDUCTION OF ROTARY COMPRESSOR PURE TONE NOISE SOURCES USING RANDOM NOISE EXCITATION.
  • Record ID : 1991-2551
  • Languages: English
  • Publication date: 1990/07/17
  • Source: Source: Proc. 1990 int. Compress. Eng. Conf., Purdue Univ.
    vol. 2; 780-788; 8 fig.; 5 ref.
  • Document available for consultation in the library of the IIR headquarters only.

Indexing